Onions - Growth retardation
Symptoms
Older leaves turn completely yellow along their entire length due to lack of chlorophyll. With progressing deficiency, browning and dieback of leaf tips will follow.
Plant growth is considerously inhibited.
Causes
Magnesium Deficiency
Onions - Growth retardation
Symptoms
Older leaves turn completely yellow along their entire length due to lack of chlorophyll. With progressing deficiency, browning and dieback of leaf tips will follow.
Plant growth is considerously inhibited.
Causes
Magnesium Deficiency
Onions - Growth retardation
Symptoms
The outer leaves show striped interveinal chlorosis, followed by tip-burn and necrosis.
Growth is inhibited.
Causes
Manganese Deficiency
Onions are very susceptible to Mn deficiency.
Magnesium deficiency made worse by
- Sandy soils
- Acidic soils
- Potassium rich soils
- Soils receiving high potash applications
- Cold wet periods
Magnesium is important for
- Chlorophyll production
- Improves shelf life by reducing rot
